6 Sylvania 6S4 6S4A Vacuum Tubes NOS NIB Lot Of Six Ken-Rad NOS NIB 5 record cleaner and am

5 record cleaner and am playing it as I write on my Rega Planar 1

an silkscreened base

This Amperex 8020 half-wave rectifier tube was tested on our Paul Hart-calibrated TV7/U

I have played it in my Musical Paradise 301 MK 3 with an adapter (not included) as a 6SJ7 substitute and it sounds excellent -- airy with excellent dynamics and signal bandwidth

Bottles: medium height

6 Sylvania 6S4 6S4A Vacuum Tubes NOS NIB Lot Of Six Ken-Rad NOS NIB 5 record cleaner and amThis lot of six new old stock, new in box Sylvania 6S4A tubes tested to spec on our Paul Hart calibrated TV7 U. Five are 6S4As and one is a 6S4. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100.